*{
	padding: 0px;
	margin: 0px;
}
ul,li{
	list-style: none;
}
#box{
	width: 800px;
	height: 300px;
	margin: 50px auto;
	position: relative;
	overflow: hidden;
}
.piclist{
	position: absolute;
}
.piclist li{
	width:800px;
	height: 300px;
	float: left;
}
.dotlist{
	position: absolute;
	left: 50%;
	bottom: 5px;
	margin-left: -50px;
}
.dotlist li{
	width:15px;
	height: 15px;
	border-radius: 50%;
	background: #ccc;
	float: left;
	margin-left: 5px;
}
.dotlist .active{
	background: orange;
}
#box>a{
	display: block;
	width: 50px;
	height: 80px;
	background: rgba(0,0,0,0.5);
	position: absolute;
	top: 50%;
	margin-top: -40px;
	font-size: 36px;
	color: white;
	text-align: center;
	line-height: 80px;
	text-decoration: none;
}
.left{
	left: 0px;
}
.right{
	right: 0px;
}